JPS6018491B2 - Roll coolant device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roll coolant device, and more particularly to a roll coolant device equipped with a device for reusing cooling water for a rolling mill.

The prior art will be explained with reference to FIG.

Clean cooling water supplied from 1 water source is injected to 4 rolling mills by pumps 2 and 3.

The injected cooling water is collected in an oil pan 5, passes through an oil return pipe 6, is stored in a tank 7, and is supplied by a pump 8 to a separate waste liquid treatment device 9. In this case, equipment was required to supply the entire amount of water supplied from the water source to be injected into the rolling mill, and waste liquid treatment equipment was also required to be capable of processing the entire amount of coolant injected.

An object of the present invention is to provide a roll coolant device that can downsize water source equipment and wastewater treatment equipment by reusing the cooling water injected to the rolling mill in the latter stage to the rolling mill in the former stage.

The feature of the present invention is that piping is provided for injecting roll coolant liquid supplied by a pump from a water source to the rolling mills arranged in tandem at the later stage, and a tank is provided for collecting the roll coolant liquid injected to the rolling mills in the latter stage. , an impurity removal device is attached to the tank, and piping is installed to inject the coolant collected in the tank to the preceding rolling mill arranged in tandem, which is fed by another pump, so that the roll coolant is reused. This is a roll coolant device with a similar design.

Specific examples will be explained below based on the drawings.

FIG. 2 shows an embodiment of the present invention. 10 The rolled material flows from left to right as shown.

The rolling mill is No. 1 from the entry side. 1, No. 2, No. 3, No
．． 4, and no. An example of five rolling mills in No. 5 will be explained. Clean cooling water supplied from No. 1 water source is pumped to No. 1 by pump No. 1. 4 rolling mill and No. 4 rolling mill. 5 Injected into the latter stage of the rolling mill.

An example of the injection amount per pump is 7,500/min, which requires a large water source. In addition to the water injected by pump 11, rolling oil is injected into the rolling mill through pipe 12 by a device not shown in this figure. This rolling oil has a flow rate of about 50 som/min per rolling mill. The water and rolling oil injected into the rolling mill pass through oil bun 5 and oil return pipe 13 and are collected in tank 14. A skimmer (15) is installed in the tank (14) to drain oil and dirt floating inside the tank.

Suction of water from 14 tanks with 16 pumps, M. 1, No
．． 2 and no. 3 Water is injected into the front stage of the rolling mill.

An example of the injection amount per 16 pump is about 5,000 m/min, and there are two rear rolling mills (Sha.4, Ji.5) and three front rolling mills (M.1, M.2, M. The capacity is about the same as 3).

In this case, if the injection amount of the rear rolling mill is less than the injection amount of the front rolling mill, clean water is replenished into tank 14, and if it is larger than that, the water is overflowed from tank 14 and discharged. In addition to the water sprayed by the 16 pump, there is also water on the ship's side. 2
,M. In the rolling mill 3, rolling oil is injected into the rolling mill through a pipe 17 by a device not shown in this figure, as in the latter stage. The water and rolling oil injected into the rolling mill are collected in tank 19 by blocking oil bun 5 and oil return pipe 18.

The liquid is connected by means of 20 pumps to 9 wastewater treatment devices, the devices of which are not shown in detail. According to the present invention, by reusing the cooling water injected to the rolling mill in the latter stage to the rolling mill in the former stage, water source equipment and wastewater treatment equipment can be installed with equipment that has a throughput of about half that of the conventional technology. Since clean cooling water can be injected into the rolling mill in the latter stage, the space of the rolling equipment can be reduced and high-quality rolled products can be obtained.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram for explaining the prior art, and FIG. 2 is a schematic diagram for explaining the present invention. 1...Water source, 9...Wastewater treatment device, 11, 16, 20...
...Pump "14,19...Tank, 4...Rolling machine."

Claims (1)

[Claims] 1 Piping is provided for injecting roll coolant liquid supplied by a pump from a water source to the rolling mills arranged in tandem at the later stage, and a tank is provided for collecting the roll coolant liquid injected to the rolling mills at the latter stage, and the tank is An impurity removal device was attached, and piping was installed to inject the coolant collected in this tank to the previous stage rolling mills arranged in tandem, which were fed by another pump, allowing the roll coolant to be reused. Characteristic roll coolant device.